Linotype-machine.



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LINOTYPE MACHINES APPLIOATION PILE BBPT. 12, 190s.

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No. 757,643.` PATENTED APR. 19, 1904. S. J. BRIDBN.

` LINOTYPBMAGHINE.

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UNITED 'STATES Patented April 19, 1904. A"

PATENT OEEICE.

SAMUEL J. BBIDEN, OF BROOKLYN, NEW YORK, ASSIGNOR TOTHE MERGENTHALER LINOTYPE COMPANY, A CORPORATION OF NEW YORK.

SPECIFICATION forming .part of Letters Patent No. 757,648, dated April 19, 1904.

Application filed September 12,1903. Serial No. 173,006. (No model.) i

To aZZ whom it may concern:

. Be it known that I, SAMUEL J. BRIDEN, of`

lincluding expansible wedge-spacers betweenV the words of the line, is held temporarily'in a vise or support in front of a slotted mold,

lwhich latter is held tightly against the face of the matrix-line while being filled with molten metal to produce a slug or linotype, on the edge of which the type characters are formed in relief by the matrices. The matrices are formed at their lower ends with shoulders or ears which bear beneath the lower edge of the mold to insure the proper alinement of their characters horizontally. Before the casting operation occurs the wedgespacers are forced upward through the matrixline in. order to elongate and justify the same between the conning-jaws at its ends. After the casting action the mold is moved directly away from the face of the matrixline in order to withdraw the type on the edge of the contained slug from the matrices. In the machine as heretofore constructed the upward pressure on the wedge-spacers was under certain conditions continued during the casting operation and during the withdrawal of the mold. This upward pressure tendedv to lift not onlythe spacers, but also ther line of matrices, causing the ears of vthe latter to bear forcibly against the under side of the mold. As this pressure continued during the retreat of the mold it was found that the matrix-ears were worn or cut away on their upper edges, the result being a defective alinement of the characters on the slug andin the print therefrom.` The aim of the present invention is to overcome this injury to the matrices; and it consists, essentially, in so constructing and timing the parts that the justimodified at will provided the mode of action above indicated is retained.

I have lshown in the drawings only such portions of the machine as are necessary to an understanding of my invention.

Figure l is a vertical section from front to rear through the casting mechanism of a linotype-machine, taken on the correspondinglynumbered line of the second figure. Fig. 2 is a horizontal section on the correspondinglynumberedline of Fig. l, the melting-pot being shown in top plan view. Fig. 3 is an inside face view of the vise for supporting the matrix-line and the justifying devices.

A represents the matrices, and B the wedgespacers, assembled in a common line and suspended in a slotted vertically-movable support O, commonly known as the first elevator. This elevator lowers the line from a higher level to the casting position directly in front of the slotted mold E, and its purpose is to give the line a proper support during the casting action, at which time the elevator is seated at its front directly against a rigid frame or vise-frame D, which is provided with the usual jaws F and F' to limit the elongation of the line. At this time the mold E is pressed strongly against the face of the matrix-line by the mouth of the melting-pot H. This pot is provided with supportinglegs arranged to turn upon a horizontal axis fr, and it is pressed forward, as usual, by cam I, acting on a roller J, seated in lever K, pivoted at one end to the back of the pot and acting thereon at the opposite end'through an intermediate spring L.

The mold E is carried, as usual, in a vertical wheel M, mounted on a lateral arm on a horizontal slide N, seated in the main frame and retracted by a cam O, acting through an intermediate lever I).

The justification of the line is effected by a horizontal pusher-bar R, which rises beneath the lower ends of the wedge-spacers B, so as to push them upward through the line of matrices. This bar R is raised and lowered by means of two rods S and S', guided in the vise-frame and having at their lower ends collars or enlargements, actedupon .by the forked ends of the levers 'I and T, mounted at their lower ends on a horizontal axis U in the main frame. These levers are urged upward independently by rods V and V and their liftingsprings W and W', as usual, the connections tending at all times to lift the spacers.

In order to depress the levers and the attendant parts, and thereby relieve the spacers from the lifting effect, two cams X and X are mounted on the main shaft, as usual, in position to act on rollers on the upper edges of the levers, as plainly shown in Figs. l and 2. These cams are formed, as heretofore, to give a repeated rising-and-falling movement to the bar R to effect the justification prior to the casting action; but they differ from the cams heretofore in use in that they are formed and timed in relation to the other parts, so that they lower the justifying-bar R and relieve thefspacers B from upward pressure in every case before the mold E is retracted from the matrix-line. It is in this manner that the line of matrices is relieved from the upward pressure of the justifying devices and the ears of the matrices relieved from pressure against the Linder edge of the mold during its retreat.

While I prefer to use the two cams,levers, and springs for controlling the movements of the bar R, it will be understood that my invention is not restricted to any particular form or combination of these parts, the essence of the invention lying in the relief of the matrix-ears from pressure against the mold while the latter is being withdrawn from over them.

Having thus described my invention, what I claim isl. In a linotype-machine, comprising a line of matrices, wedge-spacers, and a movable mold with a horizontal shoulder engaging over the ears of the matrices, and in combination with said elements, means for advancing the spacers through the matrix-line, the latter timed to relieve the spacers in all cases from pressure during the retreat of the mold, whereby wear between the mold and the matriX-ears is prevented.

2. In a linotype-machine, a mold, matrices having ears with horizontal surfaces to aline against the mold, wedge-spacers to justify the line, and spaceroperating `mechanism arranged to cease its action on the spacers prior to the separation of the mold and matrices.

3. In a linotype, the combination of the following elements; a line of matrices having ears, wedge-spacers in said line, a vertically-movable elevator or support for said line, a mold having a horizontal shoulder or surface adapted to engage over the matrix-ears, means for advancing and reti-acting the mold, and means for advancing the wedges arranged to cease its action prior to the withdrawal of the mold.

In testimony whereof I hereunto set my hand, this 17th day of August, 1903, in the presence of two attesting witnesses.

v SAMUEL J. BRIDEN.

Witnesses:

J. V. BLANCK, HERMAN F. Voss. 

